WO2013098683A1 - Procédé et appareil pour positionner des boîtes en papier ou en carton sur des feuilles d'ébauche de revêtement - Google Patents

Procédé et appareil pour positionner des boîtes en papier ou en carton sur des feuilles d'ébauche de revêtement Download PDF

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Publication number
WO2013098683A1
WO2013098683A1 PCT/IB2012/057131 IB2012057131W WO2013098683A1 WO 2013098683 A1 WO2013098683 A1 WO 2013098683A1 IB 2012057131 W IB2012057131 W IB 2012057131W WO 2013098683 A1 WO2013098683 A1 WO 2013098683A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveyor
covering sheet
supporting
supporting head
supporting surface
Prior art date
Application number
PCT/IB2012/057131
Other languages
English (en)
Inventor
Mauro Mazzinghi
Alessio GIOVANNESCHI
Original Assignee
Emmeci S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Emmeci S.P.A. filed Critical Emmeci S.P.A.
Publication of WO2013098683A1 publication Critical patent/WO2013098683A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0024—Making boxes having all side walls attached to the bottom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/50—Construction of rigid or semi-rigid containers covered or externally reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/042—Feeding sheets or blanks using rolls, belts or chains

Definitions

  • This invention relates to a method and an apparatus for positioning boxes on covering blank sheets.
  • the invention relates to (packing) boxes made of high quality paper or paperboard.
  • the technical field of this invention is that of industrial processing for covering boxes having a bottom wall and a lateral wall formed by any plurality of lateral walls, in particular for covering boxes with a pre-glued covering sheet (also called a covering blank).
  • the covering blank As regards the configuration of the covering blank, it generally has a number of segments equal to the number of sides of the base and each segment is connected to a corresponding side of the base.
  • This type of blank is generally known as "petal-type”.
  • blanks with other shapes are also used.
  • the number of segments is equal to (or greater than) the number of sides of the base, but that the number of segments directly connected to the base is less than the number of sides of the base, since some segments are connected to other segments.
  • the blank is usually called "H-type” or “T-type” or “cross- type”, depending on the configuration of the blank when it is extended on a surface.
  • Said lines are equipped with movement systems by means of which a sequence of boxes is conveyed to a covering apparatus which applies the pre-glued sheet to the walls of the box to complete box covering.
  • each box with its own bottom wall resting on the pre-glued surface of the sheet at a central portion of the covering sheet, and with the respective box opening facing upwards.
  • the positioning apparatus is located immediately upstream of the covering apparatus and operates along a conveyor line comprising a suction conveyor belt which retains and conveys the sheet from a gluing roller to the covering apparatus.
  • Box centring on the covering sheet is made necessary by the need to subsequently be able to achieve perfect superposing of the lateral flaps of the covering sheet on the individual lateral walls of the box.
  • Box centring is made possible by a plurality of sensors which, associated with a head for supporting and moving the box, optically detect the position of the sheet on the conveyor belt and consequently command positioning of the supporting head, identifying the correct orientation to be supplied to the box at the moment when it is coupled with the sheet.
  • the optical sensors are aimed on the sheet at specific points where they can detect a colour contrast between the covering sheet and the conveyor belt below, in such a way as to detect respective parts of the outer profile of the covering sheet.
  • the supporting head for the box is moved by suitable linear actuators (hydraulic or pneumatic cylinders) which control the Cartesian translation of the supporting head in a plane parallel with the conveyor belt, as well as rotation of the supporting head in the same plane.
  • Each actuator is associated with a respective photocell which supplies the actuator with a stop signal when the photocell detects that the respective portion of the outer profile of the covering sheet has been reached.
  • the two parallel actuators depending whether their strokes are the same or different, respectively cause a translation or a rotation of the supporting head.
  • the third actuator causes a translation of the position in a perpendicular direction.
  • the operating principle of the apparatuses described above sees the three actuators moved until the respective photocell detects that the respective portion of the outer profile of the covering sheet has been reached, causing the actuator to stop.
  • US5451795A discloses bow wrapping line comprising a camera connected to a computer to allow selecting the sheets (wraps) which meet quality criteria as to dimensions, shape and orientation, to determine whether the box and wrap are matched for each other.
  • the aim of this invention is, therefore, to provide a method and an apparatus which overcome the above-mentioned disadvantages of the prior art.
  • the aim of this invention is to provide a method and an apparatus for positioning packing boxes in covering lines which allow a high standard of precision to be achieved in coupling said boxes with the respective covering sheets.
  • the method according to the invention is characterised in that it comprises a step of acquiring at least one photographic image of the covering sheet while it is positioned on the conveyor, and a step of processing the photographic image acquired so as to identify at least one angular orientation adopted by the covering sheet on the supporting surface of the conveyor. Then, the supporting head for the box is subjected to a rotation depending on said angular orientation, so that, at the end of the rotation, the box supported by the supporting head is oriented so that it is angularly aligned with the covering sheet.
  • the invention regards a method and an apparatus for positioning boxes made of paper or paperboard on covering blank sheets (by superposing a bottom wall of the box on a corresponding base portion of the covering sheet), comprising the following steps:
  • said shifting is performed along a first direction, parallel to the direction of movement of the sheet along the conveyor, and on a second direction, transversal (preferably perpendicular) to the first direction and parallel to the supporting surface.
  • the moving step (moving of the box, that is, of the supporting head) preferably comprises three movements:
  • the supporting head is also subjected to a movement, in a plane parallel with the conveyor, subject to a checking action performed by a pair of photocells fixed to the supporting head, so as to carry out a correction of box positioning in terms of the "tracking" translation relative to the outer profile of the covering sheet.
  • shifting of the supporting head in the plane parallel with the conveyor is performed by means of two translation movements in respective directions which are transversal to each other, each of which is associated with a respective photocell.
  • Each of the translation movements is interrupted at a moment when the respective photocell detects that at least one colour discontinuity has been reached (identifying an outer profile of the covering sheet) between the covering sheet and the supporting surface of the conveyor.
  • the step of processing the photographic image comprises a step of identifying the value of an angle formed between a predetermined portion of the covering sheet and a fixed reference, and the subsequent rotation of the supporting head is carried out depending on the value of that angle.
  • the step of acquiring the photographic image is carried out on a covering sheet positioned upstream of the positioning station (in which the box is positioned on the covering sheet) along a direction of feed defined by the conveyor.
  • the step of acquiring the photographic image is carried out on a covering sheet positioned upstream, along the direction of feed of the conveyor, relative to a covering sheet which has already reached the positioning station.
  • the two translation movements of the supporting head are carried out after completion of the rotation movement of the supporting head.
  • the apparatus is characterised in that it comprises, preferably at a location upstream of the positioning station, a station for acquiring at least one (photographic) image of the covering sheet while it is positioned on the conveyor, and it comprises a control unit programmed to process the photographic image in such a way as to identify at least one angular orientation adopted by the covering sheet on the conveyor and to command the rotation of the supporting head depending on that angular orientation.
  • the positioning station comprises at least a first and a second actuators for shifting the box along a first direction, parallel to the direction of movement of the sheet along the conveyor, and on a second direction, transversal (preferably perpendicular) to the first direction and parallel to the supporting surface.
  • the positioning station is configured for moving of the box, that is, the supporting head, and in particular it is configured for shifting the supporting head along said first direction, shifting the supporting head along said second direction, and rotating the supporting head; wherein said rotation is being performed depending on the angular orientation identified by processing said acquired image.
  • the positioning station comprises at least one pair of photocells facing towards the conveyor for detecting at least one colour discontinuity between the supporting surface of the conveyor and a covering sheet positioned on that supporting surface.
  • the apparatus is equipped with movement means operating on a movable frame for supporting the supporting head, to divide the supporting head shifting movement into at least two translation movements in respective directions which are transversal to each other (not parallel, preferably perpendicular) and lying in a plane parallel with the supporting surface of the conveyor, so as to implement the above-mentioned "tracking" operating logic.
  • control unit is connected to the photocells and to the movement means for subjecting each supporting head translation movement to a respective photocell, and is also programmed to activate the movement means depending on the signals emitted by the photocells and to interrupt at least one of the supporting head translation movements when the corresponding photocell detects that a colour discontinuity has been reached between the covering sheet and the supporting surface of the conveyor.
  • the acquisition station is positioned upstream of the positioning station relative to the direction of feed of the conveyor.
  • the acquisition station comprises a camera positioned above the conveyor and facing towards it, and can be translated along the direction of feed of the conveyor.
  • the acquisition station comprises a camera supporting portal, able to slide while supported on respective guides which are parallel with the direction of feed identified by the conveyor.
  • control unit is programmed to calculate, starting from the photographic image acquired, the value of an angle of inclination of a covering sheet relative to a fixed reference and to activate the supporting head translation movements in such a way as to move the movable frame so that it adopts, relative to the fixed reference, an angle coinciding with the angle obtained from processing of the photographic image.
  • the movable frame comprises a sliding structure supporting the supporting head and supported by respective longitudinal guides so that it slides relative to the fixed frame along the direction of feed, and said movable structure is associated with a first actuator designed to move it along the longitudinal guides.
  • the first actuator is mounted on a supporting structure which rotates fixed to the sliding structure according to the rotation movement of the supporting head in the plane parallel with the conveyor.
  • the movement means comprise a second and a third actuator, which are parallel with each other, for making the sliding structure translate along a direction transversal to the direction of feed and/or rotate in the plane parallel with the supporting surface of the conveyor.
  • Each longitudinal guide is supported by a corresponding transversal support designed to guide the longitudinal guide, and with it the sliding structure, in a translation movement and/or a rotation in the plane parallel with the supporting surface of the conveyor.
  • Each transversal support is slidably coupled to a fixed frame for sliding perpendicularly to the direction of feed and is also hinged to the respective longitudinal guide to allow an inclination of the longitudinal guide relative to the fixed frame.
  • the above-mentioned first actuator comprises a basic body fixed to one of the longitudinal guides and a pusher connected to the sliding structure for moving the sliding structure along the longitudinal guides. Consequently, the first actuator rotates fixed to the sliding structure relative to a rotation movement in the plane parallel with the conveyor.
  • the actuators are of the male - and - female screw type and each comprises a brushless electric motor.
  • Figure 1 illustrates an apparatus for positioning packing boxes according to this invention
  • FIGS. 2 and 3 are plan views of the apparatus of Figure 1 and according to two different operating configurations;
  • Figures 4 and 5 show a first portion of the apparatus of Figure 1 seen from two different angles;
  • FIG. 6 shows a second portion of the apparatus of Figure 1 ;
  • the apparatus 1 is intended in particular for moving boxes 100 (having any shape, parallelepiped in this description) so as to determine their correct positioning relative to corresponding covering sheets 200 which, in subsequent folding and covering stations, are folded and wrapped on the respective box 100 to completely cover at least its outer surfaces.
  • the crosspieces 9 are supported on one side by the longitudinal member 8 and, on the opposite side, they are coupled by means of ball joints (not visible) to an auxiliary longitudinal guide 10 belonging to the fixed frame 5.
  • a supporting head 1 1 mounted on the sliding structure, and in particular on the longitudinal member 8, there is a supporting head 1 1 designed to receive and support a packing box 100 during the positioning movement.
  • the first actuator 14 can apply a pushing action which is always directed along the longitudinal member 8 and therefore without components transversal to it which would compromise system sliding and would increase the forces exchanged.
  • the first actuator 14 comprises a basic body 19, fixed to one of the longitudinal guides 20 by means of the supporting structure 18, and an active portion (a pusher or piston) connected to the sliding structure for moving it along the longitudinal guides 7.
  • the colour discontinuity identifies the outer profile of the covering sheet 200 and, therefore, detection of the colour variation coincides with reaching the edge of the covering sheet 200.
  • the actuators 14, 16, 17 are of the male - and - female screw type driven by respective electric motors "M".
  • said type of actuators is particularly suitable for producing a high level of positioning precision and is particularly advantageous in producing open loop shifting as in the case of rotation of the supporting head commanded by the control unit depending on the angle identified based on the photographic image.
  • the electric motors "M" of the actuators 14, 16, 17 are of the brushless type, particularly suitable for use in situations requiring a high level of precision.
  • - preparing a packing box 100 to be applied to the covering sheet 200 at the positioning station 4 in such a way as to superpose a bottom wall of the box 100 on a corresponding base portion of the covering sheet 200; - moving the box 100 by means of a supporting head 1 1 in such a way that the box 100 adopts, relative to the covering sheet 200, a predetermined orientation in which the bottom wall of the box 100 is aligned with the base portion of the covering sheet 200.
  • the movement step is carried out by shifting and rotation of the supporting head 1 1 in a horizontal plane parallel with the supporting surface 3 of the conveyor 2.
  • the method comprises the following steps:
  • the two above-mentioned translation movements of the supporting head 1 1 are carried out after completion of the rotation movement of the supporting head 1 1 in the horizontal plane parallel with the supporting surface 3 of the conveyor 2.
  • the correction of head angular positioning performed based on an angle value previously calculated based on the image acquired (therefore in open loop) releases the supporting head rotation movement from the two translation movements of the head, thus allowing a significant increase in positioning precision.
  • the apparatus made in this way is, in fact, free of the intrinsic positioning error which, in prior art apparatuses completely controlled by "tracking" logic with photocells, combines the translation movements of the supporting head with the rotation movement.

Landscapes

  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packaging Of Special Articles (AREA)
  • Basic Packing Technique (AREA)

Abstract

L'invention porte sur un procédé pour positionner des boîtes d'emballage dans des lignes de revêtement, lequel procédé comprend une étape consistant à acquérir une image photographique d'une feuille de revêtement (200) positionnée sur le transporteur (2), une étape consistant à traiter l'image photographique pour identifier une orientation angulaire adoptée par la feuille de revêtement (200) sur le transporteur (2) et une étape suivante d'orientation d'une boîte d'emballage (100) en fonction de l'orientation angulaire précédemment identifiée, de telle manière que la boîte (100) et la feuille de revêtement (200) sont positionnées selon la même orientation angulaire et peuvent être superposées avec un niveau de précision élevé.
PCT/IB2012/057131 2011-12-29 2012-12-10 Procédé et appareil pour positionner des boîtes en papier ou en carton sur des feuilles d'ébauche de revêtement WO2013098683A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO2011A000771 2011-12-29
IT000771A ITBO20110771A1 (it) 2011-12-29 2011-12-29 Procedimento ed apparato per il posizionamento di scatole di carta o cartone su fogli sbozzati di rivestimento

Publications (1)

Publication Number Publication Date
WO2013098683A1 true WO2013098683A1 (fr) 2013-07-04

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Application Number Title Priority Date Filing Date
PCT/IB2012/057131 WO2013098683A1 (fr) 2011-12-29 2012-12-10 Procédé et appareil pour positionner des boîtes en papier ou en carton sur des feuilles d'ébauche de revêtement

Country Status (2)

Country Link
IT (1) ITBO20110771A1 (fr)
WO (1) WO2013098683A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20152646A1 (it) * 2015-07-30 2017-01-30 Saip Surl Apparecchiatura di maschera di schiumatura per frigoriferi
ITUB20152675A1 (it) * 2015-07-30 2017-01-30 Saip Surl Apparecchiatura di maschera di schiumatura per frigoriferi
IT201700049277A1 (it) * 2017-05-08 2018-11-08 Sa Te Srl Metodo per la puntatura di fogli di carta per la costruzione di scatole di carta o cartone.
CN110712389A (zh) * 2019-10-14 2020-01-21 江苏星光新材料科技有限公司 一种具有限位功能的纸制品加工传输装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5451795A (en) 1994-04-28 1995-09-19 Crathern & Smith, Inc. Apparatus for spotting labels onto a surface having a transparent conveyor means
EP0685329A2 (fr) 1994-06-01 1995-12-06 EMMECI S.r.l. Appareil pour le collage de revêtement d'une boîte avec dispositif de positionnement de boîte

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5451795A (en) 1994-04-28 1995-09-19 Crathern & Smith, Inc. Apparatus for spotting labels onto a surface having a transparent conveyor means
EP0685329A2 (fr) 1994-06-01 1995-12-06 EMMECI S.r.l. Appareil pour le collage de revêtement d'une boîte avec dispositif de positionnement de boîte

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20152646A1 (it) * 2015-07-30 2017-01-30 Saip Surl Apparecchiatura di maschera di schiumatura per frigoriferi
ITUB20152675A1 (it) * 2015-07-30 2017-01-30 Saip Surl Apparecchiatura di maschera di schiumatura per frigoriferi
IT201700049277A1 (it) * 2017-05-08 2018-11-08 Sa Te Srl Metodo per la puntatura di fogli di carta per la costruzione di scatole di carta o cartone.
WO2018207086A1 (fr) * 2017-05-08 2018-11-15 Sa-Te S.R.L. Procédé d'alignement de feuilles de papier pour la construction de boîtes en papier et en carton
CN110712389A (zh) * 2019-10-14 2020-01-21 江苏星光新材料科技有限公司 一种具有限位功能的纸制品加工传输装置

Also Published As

Publication number Publication date
ITBO20110771A1 (it) 2013-06-30

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